{"id":"CVE-2021-34798","details":"Malformed requests may cause the server to dereference a NULL pointer. This issue affects Apache HTTP Server 2.4.48 and earlier.","aliases":["BIT-apache-2021-34798"],"modified":"2026-04-16T04:39:03.154951547Z","published":"2021-09-16T15:15:07.267Z","related":["ALSA-2022:0891","SUSE-SU-2021:3299-1","SUSE-SU-2021:3335-1","SUSE-SU-2021:3522-1","openSUSE-SU-2021:1438-1","openSUSE-SU-2021:3522-1"],"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZNCYSR3BXT36FFF4XTCPL3HDQK4VP45R/"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r61fdbfc26ab170f4e6492ef3bd5197c20b862ce156e9d5a54d4b899c%40%3Cusers.httpd.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r82838efc5fa6fc4c73986399c9b71573589f78b31846aff5bd9b1697%40%3Cusers.httpd.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r82c077663f9759c7df5a6656f925b3ee4f55fcd33c889ba7cd687029%40%3Cusers.httpd.apache.org%3E"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SPBR6WUYBJNACHKE65SPL7TJOHX7RHWD/"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r3925e167d5eb1c75def3750c155d753064e1d34a143028bb32910432%40%3Cusers.httpd.apache.org%3E"},{"type":"ADVISORY","url":"https://kc.mcafee.com/corporate/index?page=content&id=SB10379"},{"type":"ADVISORY","url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-httpd-2.4.49-VWL69sWQ"},{"type":"ADVISORY","url":"http://httpd.apache.org/security/vulnerabilities_24.html"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202208-20"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20211008-0004/"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2021/10/msg00001.html"},{"type":"ADVISORY","url":"https://www.tenable.com/security/tns-2021-17"},{"type":"ADVISORY","url":"https://www.debian.org/security/2021/dsa-4982"},{"type":"FIX","url":"https://www.oracle.com/security-alerts/cpujan2022.html"},{"type":"FIX","url":"https://www.oracle.com/security-alerts/cpuapr2022.html"},{"type":"FIX","url":"https://cert-portal.siemens.com/productcert/pdf/ssa-685781.pdf"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/apache/httpd","events":[{"introduced":"0"},{"last_affected":"c37a3162d1c0aeb6f3b80e831243daf61596ac87"}],"database_specific":{"versions":[{"introduced":"0"},{"last_affected":"2.4.48"}]}}],"versions":["2.4.48"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-34798.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"34"}]},{"events":[{"introduced":"0"},{"last_affected":"35"}]},{"events":[{"introduced":"0"},{"last_affected":"9.0"}]},{"events":[{"introduced":"0"},{"last_affected":"10.0"}]},{"events":[{"introduced":"0"},{"last_affected":"11.0"}]},{"events":[{"introduced":"0"},{"last_affected":"5.19.1"}]},{"events":[{"introduced":"0"},{"last_affected":"1.10.0"}]},{"events":[{"introduced":"0"},{"last_affected":"13.4.0.0"}]},{"events":[{"introduced":"0"},{"last_affected":"13.5.0.0"}]},{"events":[{"introduced":"0"},{"last_affected":"12.2.1.3.0"}]},{"events":[{"introduced":"0"},{"last_affected":"12.2.1.4.0"}]},{"events":[{"introduced":"0"},{"last_affected":"17.1"}]},{"events":[{"introduced":"0"},{"last_affected":"17.2"}]},{"events":[{"introduced":"0"},{"last_affected":"17.3"}]},{"events":[{"introduced":"0"},{"last_affected":"8.58"}]},{"events":[{"introduced":"0"},{"last_affected":"8.8"}]},{"events":[{"introduced":"0"},{"fixed":"3.1"}]},{"events":[{"introduced":"0"},{"last_affected":"14.0-NA"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}